Soil Chemical Amendments and the Macronutrients Mobility Evaluation in Oxisol Treated With Biochar

Abstract

Biochar is material produced during a process called pyrolysis. This material can be used as fertilizer to increase the agronomic productivity of low fertility soils. The objective of this study was to evaluate the soil chemical amendments and the macronutrients leaching following biochar application, produced from poultry litter, in Yellow Red Latosol in laboratory experiments. Soil columns (height 20 cm) containing 0; 10; 15; 20; 25 and 30 t ha-1 of biochar with four replications totaled 24 experimental units. For 30 days, water was applied daily to each column, and the leachates were collected and chemically characterized. After this period, soil samples were taken from the 0-10 and 10-20 cm layer depth and chemically characterized. Biochar reduced exchangeable acidity values. Biochar improved soil fertility. Leachates contained increasing EC, K, Na, Ca and Mg, however the concentration of these elements were small in relation to the biochar doses.

Melon Seedlings Phytomass under Poultry Litter Biochar Doses

“…The exchangeable cations content (potassium and sodium) increased with poultry litter biochar concentrations in a quadratic and linear form, respectively, which is in accordance with previous studies [24] [28] [29]. According to Figure 1(c) and Figure 1(d , with an increase of around 1492% and 160%, between these values and the control, respectively.…”

“…Therefore, the biochar acts as a soil acidity corrector.The Electrical Conductivity (EC) of the substrate increased linearly with the biochar reaching a value of 1.45 dS•m −1 for the 20 t•ha −1 dose(Figure 1(b)). The results agree with[24] who also working with poultry litter biochar doses ob-served an increase of the EC, with the biochar application reaching a value of 0.39 dS•m −1 with the 30 t•ha −1 dose. The increase of the EC of the substrate with the biochar is related with the increase of the exchangeable bases of potassium calcium, magnesium and sodium, available in the biochar, as will be commented afterwards.…”

Biochar enriched with organic fertilizer improves the survival and growth rate of Anthocepalus cadamba seedlings planted on degraded spodosols

“…bulk density, porosity, water holding capacity, available water, infiltration, permeability, structure formation and stability (Herath et al 2013;Darusman et al 2017;Mahmoud et al 2017), chemical properties, i.e. increased the pH, CEC, nutrient retention (Hossain et al 2010;Silber et al 2010;Fernandes et al 2018) and biological properties, i.e. microbial population and activities, microbial structure (Graber et al 2010;Kolton et al 2011;Luo et al 2018) to promote better use of plant root zone which in turn enhance plant growth and quality.…”

Impacto ambiental del vertimiento de aguas servidas en aglomerados urbanos ilegales del municipio de Villavicencio, Colombia

“…Los parámetros fisicoquímicos se encuentran directamente relacionados con la salud del suelo y desem- peñan un rol esencial en el desarrollo de la microbiota y mesofauna edáfica, y con esto, la cobertura vegetal que regula el sistema (Agegnehu y Amede, 2017, Gómez-Sagasti et al, 2012, Muñoz-Rojas, 2018. Estudios muestran que los suelos del lugar presentan de forma natural parámetros relevantes en el funcionamiento, entre los cuales se destacan el pH (4,2-5,5), CE (50 µS cm −1 ), concentración de MO (1,2-1,7 %) y nitrógeno (1600 mg kg −1 ) y CIC (124 meq-g 100 g −1 ) (Eurípides, Peñuela, Yacomeloy Orduz-Rodríguez, 2018, Fernandes et al, 2018, Jamioy, Menjivar y Rubiano, 2015, Nunes et al, 2017, Shibata et al, 2017. Estos parámetros pueden verse afectados fuertemente ante actividades antrópicas, como agricultura, ganadería, pastoreo, contaminación y malas prácticas, que pueden llegar a inestabilizar los procesos de regulación, generando pérdida de servicios ecosistémicos y problemáticas ambientales, lo cual afecta finalmente a la sociedad (Gómez-Sagasti et al, 2012, Castro-Garzón, Torres-Flórez y Gallardo-Lichaa, 2020.…”